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《Chinese Journal of Rice Science》 1999-01
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Inheritance of Blast Resistance in Two Japonica Rice Landraces from Taihu Lake Area

LI Peifu; ZHAI Huqu; ZHANG Hongsheng; LU Zhiqiang; CHEN Zhiyi; WANG Faming(1Rice Research Institute, Nanjing Agricultural University, Nanjing 210095; 2Plant Protection Research Institute, Jiangsu Academy of Agricultural Sciences, Nanjing 210014)  
Two japonica rice landraces Baodao and Heikezijing from the rice-growing area of Taihu Lake in China, whichwere highly resistant to the various Chinese races of rice blast (Pyricularia grisea ), were crossed with the susceptible Lijiang Xintuanheigu without any resistance genes to known races of the pathogen to produce hybrid progenies. The seedlingplants of parents, F,,F,, BC, and selected F, derived lines in the F, were inoculated with the mostly prevalent race ZG1 andvirulent race ZA49 respectively in the greenhouse to determine the inheritance of resistance to blast in two landraces. The results indicated that the resistance of the Baodao and Heikezijing to races ZG1 and ZA49 were dominant and monogenic andnonallelic each other. It was found that the two resistance genes in the landraces were independent with the three known lociPi--km, Pi-ta and Pi-bin the near isogenic lines.
【Fund】: 江苏省应用基础研究项目!BJ95091
【CateGory Index】: S435.111
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